Question: The number of integral values of A for vhich the equation costr sin a + cos 2r + A? +A = 0 will have

The number of integral values of A for vhich the equation costr 

The number of integral values of A for vhich the equation costr sin a + cos 2r + A? +A = 0 will have atleast one solution is (A) 1 (B) 2 (C) 3 (D) 4

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